Lock-nut.



W. P. BONNESS. I

LOOK NUT.

APPLICATION FILED MAY 24, 1911.

I 1,033,778. v Patented July 30,1912.

WILLIAM F. BONNESS, OF MADISON, WISCONSIN.

LOQK-NUT.

Spcificatton of Letters Patent. I Patented July 30, 1912,

Application filed May 24, 1911. Serial No. 629,101.

\ To all whom z't may concern:

Be it known that I, WILLIAM, F. BoNNnss, a citizen of the United States, and a resident of the city of Madison, county of Dane, and

State of Wisconsin, have invented certain new and useful Improvements in Lock-Nuts,

of which the following is a specification.

My invention relates to improvements in lock-nuts and has for its object the production of a device of this character which is of improved construction and efiicient in operation.

The invention consists in the combination and arrangement of parts hereinafter described and claimed. y

The invention will be best understood by reference to the accompanying drawing forming a part of the specification, and in which Fi ure 1 is-a plan .view of a blank from which a lock-nut embodying one form of my invent-ion may be formed; Fig. 2, a side elevation thereof; Fig. 3, a side elevation of the blank shown in Figs. 1 and 2, bent to a position for threading; Figs. 4, 5, and Gare views similar to Figs. 1, 2, and 3, respectively, of another form of the lock-nut, and Fig. 7 is a sectional view of the lock-nut shown in Figs. 4, 5, and 6, ready for use.

' The form of construction illustrated in 'Figs. 1 to 3 inclusive, comprises a blank which is formed of any suitable malleable sheet metal, wrought iron being preferably used. The blank consists of the similarly formed end portions 1 and the intermediate or connecting portion 2, the end portions being shown of hexagonal form for the production of a lock-nut of this formation. The portions 1 are formed with central circular o enings or perforations 3. In the formation of the blank as shown in Figs. 1 and 2 and which formation is preferably effected by punching, the blank is first bent transversely upon itself, as shown in Fig. ,3. As shown in Fig. 3, the ends 1 are disposed parallel with each other with the openings 3 in alinement for tapping or screw-threading, both openings being simultaneously tapped. Finally one of the end portions 1 is forced to a position to bring said openings in non-alinement, with one of said openings farther transversely from the bend than the other.

In Figs. 4 to 6 inclusive, is illustrated a construction slightly different from that just described, the blank being-formed at 'one'end '1 of greater thickness than at the.

other, this form bein designed for heavier work than that first described. A recess is formed at the juncture between the ends of portions 1 'on the side thereof falling outside the bend to facilitate the bending and the formation of a smooth outersurface at the bend. The device shown in Figs. 4 to 6 inclusive, is square in outline, but it is understood that if desired the same may be 'formed of the same shape as the form first described, or of any other polygonal outline.

Fig. 7 shows the construction last described in form for use. It will be observed that the end portions 1 are forced transversely, relatively to each other, soas to position one of the openings farther from the bend than the other. When the nut is'applied to a bolt, the openings are forced into alinement with each other, thus springing the parts and exerting the bindin pressure upon opposite sides of the bolt. %he binding pressure exerted by the nut is perpendicular to the axis of the bolt, thus causing a direct wedging and binding action between ichekthreads, and consequently av very secure While I have illustrated and described the preferred forms of construction for carrying my invention into eifect, these are capable of variation and modification without departing from the s irit of my invention. I, therefore, do not WlSh to be limited to the exact details of construction as set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claim.

Having described my invention, ,what I claim as new and desire to secure by Letters Patent, is:

A lock-nut formed from a blank provided with circular screw-threaded openings in its ends, saidblank being bent transversely name to this specification in the presence of upon itself to plosition saiddopening? rela two subscribing witnesses. tive y in non-a inement an' one o sai openin s farther transversely from said WILLQAM BONNESS" 5 bend t .an the other, substantially as de- Witnesses: n

scribed. CHAs. ONEILL, In testimony whereof I have signed my H. A.'N1irrnn'r. 

